Tescom DS300H Series, User Manual

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9.3 Modem Connection
A DS300H Series UPS can be controlled through a normal telephone line by means of a remote operator
connected through a PC with modem device, who performs a phone call to the UPS connected number. So
the operator can see all parameters and control the UPS (if permitted from OPTIONS MENU).
9.3.1 Hardware Configuration
All requirements for modem connection are as follows:
•
PC with modem
•
WINDOWS 98
•
Available UPS control software (T-MON)
•
NULL modem which is connected to UPS
UPS has its command set to set NULL modem to auto answer mode. In order to do this, press ENTER
button for 3 seconds in ENTER: MODEM INIT item in COMMAND MENU after the hardware is installed.
A short beep sound warning is heard after pressing the buton. RX and TX lights of the connected modem
activates. Modem is set after this to answer external calls by telephone line. To test this, call the telephone
number that the modem is connected with another phone and listen the modem sound.
NOTE : Not all the modems are compatible with the command set on UPS. In such a case modem
should be set by connecting a PC.
9.3.2 Functioning Principle
The remote operator, by means of a PC and a modem device and using the remote connection function of
the control software, calls the UPS through the number to which this is connected.
The NULL modem device, connected to the UPS, will answer the call and convert the data coming from
UPS’s serial port on to the telephone line. This way all measurements and controls allowed by the RS232
serial port can be carried out.
9.3.3 Modem Programming Procedure
Smart modem (SM) is the one connected to PC, and NULL Modem (NM) is the one connected to the UPS.
Standard Hayes AT programming language is the suitable language for modems. In usual applications a
modem which uses AT command set should be selected.
9.3.3.1 Smart Modem (SM) Programming
The connected modem to PC (smart modem) will be programmed from UPS control software (T-Mon)
automatically.
B0 E1 F1 M1 Q0 V1 X3
BAUD = 2400 PARITY = N
WORDLEN = 8
DIAL = TONE (TONE which can be programmed)
&A3 &B1 &C1 &D0 &H1 &I0 &K1 &M4
&N0 &R2
&S0 &T5 &Y1